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Introduction to Linux - A Hands on Guide

This guide was created as an overview of the Linux Operating System, geared toward new users as an exploration tour and getting started guide, with exercises at the end of each chapter.
For more advanced trainees it can be a desktop reference, and a collection of the base knowledge needed to proceed with system and network administration. This book contains many real life examples derived from the author's experience as a Linux system and network administrator, trainer and consultant. They hope these examples will help you to get a better understanding of the Linux system and that you feel encouraged to try out things on your own.

Can someone lead me how to do this. I have a bunch of users having .qmail in their home directory. How can I grep or cat whats inside in each of the user's .qmail file? I'm thinking of a bash script with 'for' syntax. Here is the sample:

Quote:

#!/bin/bash

users=`cat /etc/passwd | awk -F: '{print $1}'`

for id in $users
do
cd ~$id/ | cat .qmail
done

Now that I got all the list of users, didn't know how to cat/grep the .qmail file in each users. Please advise.

EDIT:
What this code modification should do (I hope) is that the script will go into the user's home directory (if it exists), and cat the .qmail file (if it exists).
Haven't tested it but give it a shot